This is the first stage of a collaborative build of greenhouse controller. The primary purpose of this controller is to operate two motors for roll-up sides through a relay box that was built during a workshop hosted by the CAPE in Quebec. The secondary purpose is to operate a heating system with the powerswitch tail available from adafruit.

Straight table legs get in the way and are fragile without lots of bracing. A pedestal base with 45 and 30/60 geometry uses 40% less lumber than a 6-legged table, is self-adjusting on un-level ground, and is much stronger than a 6-legged table (and MUCH stronger than a 4-legged table!). It uses a combination of tension and compression to keep the table top from deforming under load. It allows tables to be placed closer together, as a wheelbarrow can run between tables beneath the table top.